2003ApJ...597.1092S


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.17CEST13:47:30

2003ApJ...597.1092S - Astrophys. J., 597, 1092-1096 (2003/November-2)

Evidence for planet-induced chromospheric activity on HD 179949.

SHKOLNIK E., WALKER G.A.H. and BOHLENDER D.A.

Abstract (from CDS):

We have detected the synchronous enhancement of Ca II H and K emission with the short-period planetary orbit in HD 179949. High-resolution spectra taken on three observing runs extending over more than a year show the enhancement coincides with φ∼0 (the sub-planetary point) of the 3.093 day orbit, with the effect persisting for more than 100 orbits. The synchronous enhancement is consistent with planet-induced chromospheric heating by magnetic rather than tidal interaction, but awaits confirmation by further observations. Independent observations are needed to determine whether the stellar rotation is synchronous with the planet's orbit. Of the five 51 Peg-type systems monitored, HD 179949 shows the greatest chromospheric H and K activity. Three others show significant nightly variations, but the lack of any phase coherence prevents us saying whether the activity is induced by the planet. Our two standards, τ Ceti and the Sun, show no such nightly variations. Revised periods and updated ephemerides for the planetary orbits are also included.

Abstract Copyright:

Journal keyword(s): Stars: Planetary Systems - Stars: Activity - Stars: Chromospheres

Errata: erratum vol. 609, p. 1197 (2004)

Simbad objects: 7

goto Full paper

goto View the reference in ADS

Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 * ups And PM* 01 36 47.84216 +41 24 19.6443 4.70 4.64 4.10 3.64 3.35 F9V 881 1
2 * tau Cet PM* 01 44 04.0834226 -15 56 14.926552 4.43 4.22 3.50 2.88 2.41 G8V 1064 1
3 * tau Boo ** 13 47 15.74340 +17 27 24.8552 5.02 4.98 4.49 4.09 3.85 F7IV-V 862 1
4 HD 179949b Pl 19 15 33.2300861317 -24 10 45.673372382           ~ 92 1
5 HD 179949 PM* 19 15 33.2300861317 -24 10 45.673372382   6.772 6.237     F8V 338 1
6 V* V376 Peg EP* 22 03 10.7729598762 +18 53 03.548248479   8.21 7.63     F9V 968 1
7 * 51 Peg ** 22 57 27.9804167474 +20 46 07.782240714 6.39 6.16 5.46 4.97 4.61 G2IV 1058 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2003ApJ...597.1092S and select 'bookmark this link' or equivalent in the popup menu


2019.10.17-13:47:30

© Université de Strasbourg/CNRS

    • Contact